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A 3-6-4-7-2-5-1
B 4-6-3-2-1-5
C experiment
experiment
teeth
XXXXls
teeth
glass
thread
liquid
XXXXl
damaged
D
drinks
XXXXls
teeth
glass
pin
thread
thread
liquid
week
XXXXl
soft
damaged
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C 2-1-3-5-4
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A
a competition
1question
draw a diagram
i will meet a famous scientist
C
how are you
thanks
like
yes,ofcourse
sorry. Idont
lets try
Page 81
A
yes,certainly
yes,please
yes,certainly
yes,please
yes,please
yes,please
B
give
course
me
afraid
help
please
hand
thank.manage
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